A multi-stage pump is a type of centrifugal pump that achieves high head through "series connection of multiple impeller sets". Its core principle is to allow liquid to pass through multiple impeller sets in sequence for gradual pressure boosting, ultimately outputting pressure far exceeding that of single-stage pumps. This enables it to meet requirements such as "long-distance transportation", "high-altitude water supply", and "high-pressure working conditions". It is widely used in scenarios including industrial high-pressure circulation, water supply for high-rise buildings in cities, mine drainage, and boiler feed water, and serves as a core equipment to solve the problem of "insufficient head of single-stage pumps".

Typical Application Scenarios

Building Water Supply: Secondary water supply for high-rise buildings with more than 30 floors and super high-rise hotels/offices. Multi-stage pumps are used to boost the pressure of tap water to the roof water tank, ensuring water pressure for users on high floors.

Industrial Field: High-pressure boiler feed water in power plants (segmented multi-stage pumps), high-pressure reactor feeding in chemical plants (stainless steel multi-stage pumps), and high-temperature cooling water transportation in metallurgical plants (high-temperature multi-stage pumps).

Mining & Water Conservancy: Deep well drainage in mines (to remove accumulated water in underground tunnels, requiring a head of 50-500m), and long-distance pipeline water transportation (such as inter-basin water transfer projects, requiring a head of 100-1000m).

Special Scenarios: Oilfield water injection pumps (injecting high-pressure water into oil wells to increase crude oil output), and high-pressure liquid transportation in laboratories (such as water supply for precision instruments, requiring stable pressure).